CN105356985A

CN105356985A - Systems and methods for dynamic spectrum management

Info

Publication number: CN105356985A
Application number: CN201510683293.2A
Authority: CN
Inventors: 马良平; 叶春璇; S·艾哈迈德; A·德米尔; R·迪吉罗拉墨; J-L·格鲁; A·列兹尼克; A·A·卡费洛
Original assignee: InterDigital Patent Holdings Inc
Current assignee: InterDigital Patent Holdings Inc
Priority date: 2010-05-06
Filing date: 2011-05-06
Publication date: 2016-02-24
Anticipated expiration: 2031-05-06
Also published as: US20110287802A1; TW201212609A; US20160270090A1; EP3059893A1; JP6449835B2; JP6039548B2; US20170280465A1; IL222856A; CN105356985B; KR20130064079A; CN102884753A; MY164772A; CN102884753B; EP2567493A2; WO2011140462A2; US9350519B2; JP2013530608A; TWI520551B; JP2017076987A; IL222856A0

Abstract

Systems and methods for dynamic spectrum management are described. The method for dynamic spectrum management comprises receiving whitespace spectrum data from a whitespace data repository server, the whitespace spectrum data including available frequency range data; receiving a channel query message; in response to the channel query message, transmitting a channel available reply message to a whitespace device, the channel available reply message including preferred frequency range data determined at least based on the whitespace spectrum data and including data where the whitespace device may select a channel; and receiving a channel acknowledge message indicative of channel selection from the whitespace device.

Description

The method of Dynamic Spectrum Management and device

The divisional application that the application is the applying date is on 05 06th, 2011, application number is 201180022815.4, name is called the Chinese invention patent application of " system and method for dynamic whitespace spectrum management ".

The cross reference of related application

The application advocates that the application number submitted on May 6th, 2010 is the U.S. Provisional Application of 61/332,004 and is the rights and interests of the U.S. Provisional Application of 61/362,581 in the application number submitted on July 8th, 2010, thus its content is incorporated in this by reference.

Technical field

The application relates to radio communication.

Background technology

In the U.S., the 408MHz from 54MHz to 806MHz frequency spectrum is assigned to TV (TV).At present, 108MHz in this frequency spectrum is again being developed with by inch of candle for commercial operation or for public safety applications.The residue 300MHz of this wireless frequency spectrum will be retained, to be specifically designed to the operation of aerial TV.A part for this 300MHz resource is retained and does not use.The quantity of frequency spectrum and precise frequency is not used to change to another location along with from a position.These unused portions of frequency spectrum are called as the white space (TVWhiteSpace, TVWS) of TV.Federal Communications Committee (FCC) opens these untapped TVWS frequencies to various different non-permitted purpose.Because seldom there is TV platform to be seated outside top metropolitan area, therefore in the density of population, low or rural areas is available to most vacant TVWS frequency spectrum, these regions are easy to because employing other broadband options cause service level low, such as digital subscriber line (DSL) or cable.

Federal Communications Committee has worked out regulation, unauthorized wireless transmitter/receiver unit (WTRU) (that is, hereinafter referred to as white Space Facilities (WSD)) is allowed to run in broadcast television spectrum not by the broadcast television spectrum on the position that uses.In order to stop the WSD permitted interfering with and operate on TV frequency band; FCC needs to create TV frequency band WSD database; also referred to as the white spatial database of FCCTV (FCC-WSDB), be not recorded in position and the channel of the WSD be responsible in FCC database with the position from the fixing WSD of registration to WSD and protection that notify unappropriated TV channel.

Formulate some proposals for FCC and performed 3 basic functions to make the mechanism that uses in WSDB and message flow: data storage bank, data register process and query processing.But, the performance that WSDB itself but may can not obtain.

Summary of the invention

In one embodiment, a kind of method, the method comprises and receives white spatial frequency spectrum data from a white spatial data repository service device.In one embodiment, white spatial frequency spectrum data comprise available frequency range data.The method also comprises storing supplements (supplement) frequency spectrum usage data and receive channel query messages.The method also comprises the channel reply message transmitting and comprise at least one optimized frequency range data.Be based in part on white spatial frequency spectrum data and supplementary frequency spectrum usage data and determine at least one optimized frequency range data described.

In one embodiment, Dynamic Spectrum Management (DSM) device comprises white spatial database management module, and this white spatial database management module is configured to store to make clear one's meaning and position the white spatial frequency spectrum data of spatial data repository service device.In one embodiment, white spatial frequency spectrum data comprise available frequency range data.Described DSM device also comprises the supplementary data storage module being configured to store supplementary frequency spectrum usage data, and is configured to identify relevant (interdependency) module about supplementary data based on white Space Facilities positional information at least in part.Described DSM device can also comprise the channel list generation module being configured to identify at least one optimized frequency range data.In one embodiment, white spatial frequency spectrum data and supplementary frequency spectrum usage data is based in part on to determine at least one optimized frequency range data.Described DSM device also comprises communication module, and this communication module is suitable for communicating with reciprocity DSM, white Space Facilities and white spatial data repository service device.

In one embodiment, a kind of computer readable storage medium, has the instruction stored thereon, when performed this instruction by processing unit time, makes this device store white spatial frequency spectrum data.In one embodiment, white spatial frequency spectrum data comprise available frequency range data.Computer readable storage medium has extra-instruction, when performed this extra-instruction by processor time, computer readable storage medium store supplement frequency spectrum usage data, processing channel query messages and generate comprise at least one optimized frequency range data channel reply message.In one embodiment, this at least one optimized frequency range data is based in part on white spatial frequency spectrum data and supplementary frequency spectrum usage data is determined.

In one embodiment, a kind of method comprises frequency spectrum use, the analysis access point relevant information of identification segmentation and configures the adjacent block with usable spectrum by transmitting channel reconfiguration message to white space access point apparatus.

In one embodiment, a kind of method comprises the frequency spectrum usage data obtaining WSD-AP from reciprocity DSM equipment, and this WSD-AP is by reciprocity DSM equipment control.The WSD-AP that described method also comprises for local management sends frequency spectrum usage data to described reciprocity DSM equipment, and the frequency spectrum that transfer channel reconfiguration message is used by least one WSD-AP of described reciprocity DSM equipment control to described reciprocity DSM equipment with change.

Accompanying drawing explanation

By reference to the accompanying drawings, the following description according to providing by way of example can be understood in more detail, wherein:

Fig. 1 shows conventional IEEE system architecture;

Fig. 2 A shows the example of communication system, can perform one or more disclosed execution mode in this communication system;

Fig. 2 B shows the example of the wireless transmitter/receiver unit (WTRU) that can use in the communication system shown in accompanying drawing 2A;

Fig. 2 C shows the example of radio access network and the core network that can use in the communication system shown in accompanying drawing 2A;

Fig. 3 A shows the logic communication between Dynamic Spectrum Management (DSM) system and the white spatial database of TV (WSDB) system;

Fig. 3 B shows the message flow into performing channel inquiry processing locality, eliminates other elements of WSDB system and FCC database herein for clarity;

Fig. 4 shows the flow chart of DSM server of channel query messages of Space Facilities (WSD) of making clear one's meaning and position according to a non-limiting embodiment process;

Fig. 4 A shows the flow chart of the DSM according to a non-limiting embodiment;

Fig. 4 B shows the DSM equipment 430 according to a non-limiting embodiment;

Fig. 4 C shows the framework of the DSM server according to a non-limiting embodiment;

Fig. 5 shows the flow chart according to a non-limiting embodiment WSD processing channel inquiry;

Fig. 5 A shows the flow chart of the WSD according to a non-limiting embodiment;

Fig. 5 B shows the exemplary channel switching statement and switches claim information field;

Fig. 6 shows an exemplary DSM interface;

Fig. 7 shows an exemplary WSD interface;

Fig. 8 shows the improvement process that the channel via search extension is inquired about;

Fig. 9 shows the flow chart of the DSM server of the channel query messages sent by WSDB according to a non-limiting embodiment process;

Figure 10 show expand it according to a non-limiting embodiment WSDB available channel search to the flow chart of DSM server;

Figure 11 shows to try to be the first according to a non-limiting embodiment DSM server and assists to carry out the flow chart that available channel in WSDB calculates;

Figure 12 shows and obtains reaction assistance with the flow chart calculating available channel according to a non-limiting embodiment WSDB from DSM server;

Figure 13 shows according to a non-limiting embodiment, the flow chart that DSM server assists the available channel in WSDB to calculate corresponsively;

Figure 14 shows a conventional bandwidth inefficiency rate problem;

Figure 15 shows a conventional 40MHz allocated bandwidth, and the WSD wherein run on the 20 mhz channels selects the central point of 20MHz bandwidth as centre frequency, and the remainder of frequency spectrum is two 10MHz block of channels on every side;

Figure 16 shows 4 available normal channels (such as, channel 38-41), wherein WSD operates on 10MHz channel, thus WSD selects the central point of allocated frequency band as centre frequency, and to remain free space in frequency band be channel 38 and channel 41 (i.e. 6MHz on every side);

Figure 17 and Figure 18 show WSD can the border of selective channel 38 and channel 39 as centre frequency, or the border of channel 40 and channel 41 is as centre frequency, its all optional centre frequency as 10MHz channel;

Figure 19 shows the frequency spectrum that three heterogeneous networks run wherein.The network A run on 20MHz channel occupies first 20MHz of frequency spectrum, and network C operates on the last 10MHz of frequency spectrum, and network B occupies the 10MHz of adjacent network C;

Figure 20 shows " fragment of waste " between TV broadcast and AP;

Figure 21 shows the situation occurred when " high transmit power " AP have selected initial launch channel, and AP is when the interval leaving two TV channels thus, just should set up its network;

Figure 22 shows the daynamic bandwidth managment using DSM interface according to a non-limiting embodiment;

Figure 22 A shows according to a non-limiting embodiment prevention or the flow chart at least reducing spectral slice;

Figure 23 shows the daynamic bandwidth managment using WSD interface according to a non-limiting embodiment; And

Figure 24-26 shows the different mappings of DSM system to IEEE802.19.1 system architecture.

Embodiment

Current disclosed system and method mainly enhances the solution of the white spatial database (WSDB) of TV (TV).On the one hand, disclose the processing locality of channel inquiry, if wherein DSM server has the necessary all information of response provided for channel inquiry, then inquired about by the channel of the white Space Facilities of local Dynamic Spectrum Management (DSM) server process (WSD).On the other hand, disclose search extension, wherein WSDB transmits a part for available channel search to local DSM server.Again on the other hand, disclose the assistance that available channel calculates, wherein DSM server provides spectrum-sensing information to WSDB, calculates with the available channel improved in WSDB.Again on the other hand, the daynamic bandwidth managment can assisting the demand of coexisting is disclosed.In addition, also describe can realize above-mentioned value-added functionality and with the example message of WSDB system interaction and the content of process.

Although execution mode described herein is mainly discussed under the environment in the white space of TV, the disclosure is not limited thereto.On the contrary, the description in the white space of TV is only an exemplary application for convenience.As is well understood, system and method described herein goes for various frequency range and application.

IEEE (IEEE) standard is different or the WSD network of independent operation and WSD define the irrelevant method of radiotechnics.As the part in this standard, as shown in Figure 1, IEEE802.19.1 has defined basic system architecture and interface definition.802.19.1 system architecture is divided into three (3) individual main logical entities: the enabler (CoexistenceEnabler, CE) that coexists, coexistence manager (CM) and coexist discovery and information server (CDIS).CM is responsible for making the entity coexisting and determine.It also supports the communication between CM.CE is responsible for the request made to TVBD network or equipment, and from TVBD network or equipment obtaining information.

In one embodiment, the system and method for current disclosed Dynamic Spectrum Management (DSM) can be used by being similar to the system architecture summarized in IEEE802.19.1, improving spectrum management to allow for different communication systems.DSM system architecture described herein allows to form cluster structure, and wherein cluster head (that is, DSM server) can serve as the agency of WSDB, allows the processing locality of channel inquiry thus, and improves the efficiency of current WSDB system thus.As described below, DSM framework can also provide other value-added functionalitys.Although DSM system and method is not limited in technology or the framework of any particular type, in some embodiments, DSM system and method described herein can be the type of distributed shared memory.

Accompanying drawing 2A is the figure of the example communication system 100 that can realize one or more open execution mode wherein.Communication system 100 can be for providing the contents such as such as voice, data, video, message, broadcast to the multi-address system of multiple wireless user.Communication system 100 can make multiple wireless user by shared system resource, comprises wireless bandwidth to access these contents.Such as, communication system 100 can use one or more channel access methods, such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA) etc.

As shown in Figure 2 A, communication system 100 can comprise individual radio transmitter/receiver unit (WTRU) 102a, 102b, 102c, 102d and radio access network (RAN) 104, core net 106, public switch telephone network (PSTN) 108, internet 110 and other networks 112, but should be appreciated that disclosed execution mode contemplates the WTRU of any amount, base station, network and/or network element.Each in WTRU102a, 102b, 102c, 102d can be the equipment of any type being configured to work in wireless environments and/or communicate, such as WSD.For example, WTRU102a, 102b, 102c, 102d can be configured to send and/or receive wireless signal, and can comprise subscriber equipment (UE), mobile radio station, fixing or moving user unit, beep-pager, cell phone, personal digital assistant (PDA), smart phone, kneetop computer, net book, PC, wireless senser, consumer electronics product etc.

Communication system 100 can also comprise base station 114a and base station 114b.Each in base station 114a, 114b can be any type be configured to carry out wireless connections with at least one in WTRU102a, 102b, 102c, 102d so that access the device of such as one or more communication networks that core net 106, internet 110 and/or network 112 are such.As an example, base station 114a, 114b can be base station transceiver (BTS), Node B, evolved node-B (e Node B), home node-b, ReNB, site controller, access point (AP), wireless router etc.Although base station 114a, 114b are drawn as discrete component respectively, be appreciated that base station 114a, 114b can comprise base station and/or the network element of the interconnection of any amount.

Base station 114a can be a part of RAN104, this RAN104 can also comprise other base station and/or network element (not shown), such as base station controller (BSC), radio network controller (RNC), via node etc.Base station 114a and/or base station 114b can be configured to launch in specific geographical area and/or receive wireless signal, and this specific geographical area is referred to as community (not shown).Described community is also divided into cell sector.Such as, the community be associated with base station 114a is divided into three sectors.So, in one embodiment, base station 114a comprises three transceivers, that is, for each use transceiver of community.In another embodiment, base station 114a can use multiple-input and multiple-output (MIMO) technology, therefore, can use multiple transceiver for each sector of community.

Base station 114a, 114b can by air interface 116 and the one or more communications in WTRU102a, 102b, 102c, 102d, and described air interface 116 can be any suitable wireless communication link (such as radio frequency (RF), microwave, infrared ray (IR), ultraviolet (UV), visible ray etc.).Any suitable radio access technologies (RAT) can be used to set up air interface 116.

More specifically, as mentioned above, communication system 100 can be multi-address system and can adopt one or more channel access schemes, such as CDMA, TDMA, FDMA, OFDMA, SC-FDMA etc.Such as, base station 114a and WTRU102a in RAN104,102b, 102c can realize the radiotechnics of such as Universal Mobile Telecommunications System (UMTS) terrestrial radio access (UTRA) and so on, and wherein this radiotechnics can use wideband CDMA (WCDMA) to set up air interface 116.WCDMA can comprise the communication protocol of such as high-speed packet access (HSPA) and/or evolved HSPA (HSPA+) and so on.HSPA can comprise high-speed down link (DL) grouping access (HSDPA) and/or high-speed uplink (UL) grouping access (HSUPA).

In another embodiment, base station 114a and WTRU102a, 102b, 102c can realize the radiotechnics of such as Evolved UMTS Terrestrial radio access (E-UTRA) and so on, and wherein this radiotechnics can use LTE and/or senior LTE (LTE-A) to set up air interface 116.

In other embodiments, base station 114a and WTRU102a, 102b, 102c can realize the such as radio power technology such as IEEE802.16 (i.e. Worldwide Interoperability for Microwave intercommunication access (WiMAX)), CDMA2000, CDMA20001X, CDMA2000EV-DO, Interim Standard 2000 (IS-2000), Interim Standard 95 (IS-95), Interim Standard 856 (IS-856), GSM, EDGE, GSMEDGE (GERAN).

Base station 114b in Fig. 2 A can be such as wireless router, home node-b, HeNB or AP, and the wireless connections that any suitable RAT can be utilized to promote in the regional areas such as such as place of business, family, vehicle, campus.In one embodiment, base station 114b and WTRU102c, 102d can implement the radiotechnics of such as IEEE802.11 and so on to set up WLAN (wireless local area network) (WLAN).In another embodiment, base station 114b and WTRU102c, 102d can implement the radiotechnics of such as IEEE802.15 and so on to set up Wireless Personal Network (WPAN).In another embodiment, base station 114b and WTRU102c, 102d can utilize RAT (such as WCDMA, CDMA2000, GSM, LTE, LTE-A etc.) based on honeycomb to set up picocell or Femto cell.As shown in Figure 2 A, base station 114b can have the direct connection to internet 110.Therefore, base station 114b can not need to enter the Internet 110 via core net 106.

RAN104 can communicate with core net 106, and core net 106 can be configured to the network to the one or more any types providing voice, data, application program and/or voice-over ip (VoIP) to serve in WTRU102a, 102b, 102c, 102d.Such as, core net 106 can provide Call-Control1, billing of services, service, prepaid call, Internet connection, video distribution etc. based on shift position, and/or performs the enhanced security features such as such as user authentication.Although Fig. 2 A is not shown, will be appreciated that RAN104 and/or core net 106 directly or indirectly can communicate from adopting with RAN104 other RAN of identical RAT or different RAT.Such as, except be connected to can utilize E-UTRA radiotechnics RAN104 except, core net 106 can also communicate with adopting another RAN (not shown) of gsm radio technology.

Core net 106 can also serve as the gateway accessing PSTN108, internet 110 and/or other network 112 for WTRU102a, 102b, 102c, 102d.PSTN108 can comprise the circuit exchanging telephone net providing plain old telephone service (POTS).Internet 110 can comprise the use interconnected computer networks of common communicating protocol and the global system of equipment, and described common communicating protocol is such as TCP, User Datagram Protoco (UDP) (UDP) and IP in transmission control protocol (TCP)/Internet protocol (IP) internet protocol suite.Network 112 can comprise the wired or wireless communication network being had by other service provider and/or operated.Such as, network 112 can comprise another core net being connected to and can adopting one or more RAN of identical RAT or different RAT from RAN104.

Some or all WTRU102a, 102b, 102c, 102d in communication system 100 can comprise multi-mode ability, and namely WTRU102a, 102b, 102c, 102d can comprise for by the multiple transceivers of different wireless links from different wireless communications.Such as, the WTRU102c shown in Fig. 2 A can be configured to communicate with adopting the base station 114a of cellular radio technology, and communicates with adopting the base station 114b of IEEE802 radiotechnics.

Fig. 2 B is the system diagram of example WTRU102.As shown in Figure 2 B, WTRU102 can comprise processor 118, transceiver 120, transmitting/receiving element 122, loud speaker/microphone 124, keyboard 126, display/touch screen 128, the computer readable medium 130 of non-removable form of memory, removable memory 132, power supply 134, global positioning system (GPS) chipset 136 and other ancillary equipment 138.Will be appreciated that WTRU102 while maintenance is consistent with execution mode, can comprise any sub-portfolio of aforementioned components.

Processor 118 can be general processor, the integrated circuit (IC), state machine etc. of application specific processor, conventional processors, digital signal processor (DSP), multi-microprocessor, the one or more microprocessors associated with DSP nuclear phase, controller, microcontroller, application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) circuit, other type any.Processor 118 can executive signal coding, data processing, power control, I/O process and/or other function any that WTRU102 can be operated in wireless environments.Processor 118 can be coupled to transceiver 120, and transceiver 120 can be coupled to transmitting/receiving element 122.Although processor 118 and transceiver 120 are depicted as independent element by Fig. 2 B, will be appreciated that processor 118 and transceiver 120 can be integrated together in electronic building brick or chip.

Transmitting/receiving element 122 can be configured to be transmitted or from base station (such as base station 114a) Received signal strength to base station (such as base station 114a) by air interface 116.Such as, in one embodiment, transmitting/receiving element 122 can be the antenna being configured to launch and/or receive RF signal.In another embodiment, transmitting/receiving element 122 can be the transmitter/detector being configured to launch and/or receive such as IR, UV or visible light signal.In another embodiment, transmitting/receiving element 122 can be configured to transmitting and receiving RF and light signal.Will be appreciated that transmitting/receiving element 122 can be configured to launch and/or receive any combination of wireless signal.

In addition, although transmitting/receiving element 122 is drawn as discrete component in fig. 2b, individual WTRU102 can comprise the transmitting/receiving element 122 of any number.More specifically, WTRU102 can adopt MIMO technology.Therefore, in one embodiment, WTRU102 can comprise two or more transmitting/receiving elements 122 (such as multiple antenna) for being transmitted and received wireless signal by air interface 116.

Transceiver 120 can be configured to modulate the signal launched by transmitting/receiving element 122 and carry out demodulation to the signal received by transmitting/receiving element 122.As mentioned above, WTRU102 can have multi-mode ability.Therefore, such as, transceiver 120 can comprise the multiple transceivers being provided for WTRU102 and can communicating via the multiple RAT of such as UTRA with IEEE802.11 and so on.

The processor 118 of WTRU102 can be coupled to loud speaker/microphone 124, keyboard 126 and/or display/touch screen 128 (such as liquid crystal display (LCD) display unit or Organic Light Emitting Diode (OLED) display unit), and can receive user input data from these assemblies.Processor 118 can also export user data to loud speaker/loudspeaker 124, keyboard 126 and/or display/touch screen 128.In addition, processor 118 can access the information of the suitable memory (such as non-removable memory 130 and removable memory 132) from any type, or accesses the data be stored in this memory.Executable instruction in computer-readable recording medium.Processor 118 can perform these instructions to implement the various functions of WTRU102.Described computer-readable recording medium comprises such as non-removable memory 130 and/or removable memory 132, and described computer-readable storage medium can be further used for storing various types of data and other digital informations.Non-removable memory 130 can comprise the memory storage device of random access memory (RAM), read-only memory (ROM), hard disk or other type any.Removable memory 132 can comprise Subscriber Identity Module (SIM) card, memory stick, secure digital (SD) storage card etc.In other embodiments, processor 118 can be accessed the information from the memory not being arranged in (such as at server or home computer (not shown)) on WTRU102 physically and be stored data in this memory.

Processor 118 can receive electric power from power supply 134, and can be configured to the electric power distributing and/or control to other element in WTRU102.Power supply 134 can be used to any suitable equipment that WTRU102 powers.Such as, power supply 134 can comprise one or more dry cell (such as NI-G (NiCd), nickel-zinc ferrite (NiZn), nickel metal hydride (NiMH), lithium ion (Li) etc.), solar cell, fuel cell etc.

Processor 118 can also be coupled to the positional information (such as, longitude and latitude) that GPS chipset 136, GPS chipset 136 can be configured to the current location provided about WTRU102.Except the information from GPS chipset 136 or alternatively, WTRU102 can determine its position by air interface 116 from base station (such as base station 114a, 114b) receiving position information and/or based on the sequential that the base station near two or more receives signal.Will be appreciated that WTRU102 while maintenance is consistent with execution mode, can obtain positional information by any suitable location determining method.

Processor 118 can also be coupled to other ancillary equipment 138, and ancillary equipment 138 can comprise provides supplementary features, one or more software of function and/or wired or wireless connection and/or hardware module.Such as, ancillary equipment 138 can comprise accelerometer, digital compass, satellite transceiver, digital camera (for taking pictures or video), USB (USB) port, vibratory equipment, television transceiver, Earphone with microphone, module, frequency modulation (FM) radio unit, digital music player, media player, video game machine module, explorer etc.

Fig. 2 C is the system diagram of RAN104 according to an execution mode and core net 106.RAN104 adopts IEEE802.16 radiotechnics to carry out with WTRU102a, 102b, 102c the access service network (ASN) that communicates by air interface 116.As is discussed further below, the communication link between WTRU102a, 102b, 102c, RAN104 and core net 106 can be defined as reference point.

As shown in Figure 2 C, RAN104 comprises base station 140a, 140b, 140c and ASN gateway 142, but is to be understood that, while being consistent with execution mode, RAN104 can comprise base station and the ASN gateway of any amount.Each in base station 140a, 140b, 140c is associated with the specific cell (do not show) in RAN104, and each can comprise the one or more transceivers for being undertaken communicating by air interface 116 and WTRU102a, 102b, 102c.In one embodiment, base station 140a, 140b, 140c can realize MIMO technology.Therefore, base station 140a, such as, can use multi-antenna transmission wireless signal to WTRU102a, and receive wireless signal from this WTRU102a.Base station 140a, 140b, 140c also can provide mobile management function, and such as handover trigger, tunnel foundation, provided for radio resources management, business categorizing, service quality (QoS) strategy are implemented.ASN gateway 142 can serve as business polymerization point, and can duty pager, cache user profile, be routed to core net 106, etc.

WTRU102a, air interface 116 between 102b, 102c and RAN104 can be defined as R1 reference point, and this R1 reference point realizes IEEE802.16 specification.In addition, each in WTRU102a, 102b, 102c can set up logic interfacing (not shown) with core net 106.Logic interfacing between WTRU102a, 102b, 102c and core net 106 can be defined as R2 reference point, and it may be used for certification, mandate, the management of IP host configuration and/or mobile management.

Communication link between each in base station 140a, 140b, 140c can be defined as R8 reference point, and it comprises for promoting that WTRU switches the agreement transmitted with data between the base stations.Communication link between base station 140a, 140b, 140c and ASN gateway 215 can be defined as R6 reference point.R6 reference point can comprise the agreement for promoting mobile management based on the moving event be associated with each in WTRU102a, 102b, 102c.

As shown in Figure 2 C, RAN104 can be connected to core net 106.Communication link between RAN104 and core net 106 can be defined as R3 reference point, and it comprises the agreement for such as promoting data transmission and mobility management capabilities.Core net 106 can comprise Mobile IP home agent (MIP-HA) 144, certification, mandate, charging (AAA) server 146, and gateway 148.Although each in aforementioned components is described to a part for core net 106, any one that should be appreciated that in these elements can be had by other entities of non-core network operation business and/or be operated.

MIP-HA can be responsible for IP address management, and WTRU102a, 102b, 102c can be made at the internetwork roaming of different ASN and/or different core network.MIP-HA144 can be the access that WTRU102a, 102b, 102c are provided to packet switching network (such as internet 110), to communicate with between the device can enabling IP at WTRU102a, 102b, 102c.Aaa server 146 can be responsible for user authentication and support customer service.Gateway 148 can promote and other network interconnection.Such as, gateway 148 can be provided to circuit-switched network (access of such as PSTN108) to promote the communication between WTRU102a, 102b, 102c and conventional land lines communicator for WTRU102a, 102b, 102c.In addition, gateway 148 can be the access that WTRU102a, 102b, 102c are provided to network 112, and this network 112 can comprise other the wired or wireless networks being had by other service providers and/or runed.

Although Fig. 2 C does not illustrate, should be appreciated that RAN104 can be connected to other ASN, and core net 106 can be connected to other core net.Communication link between RAN104 and other ASN can be defined as R4 reference point, and it can comprise for coordinating WTRU102a, 102b, 102c ambulant agreement between RAN104 and other ASN.Communication link between core net 106 and other core net can be defined as R5 reference point, and it can comprise for promoting agreement interconnected between family's core net and accessed core net.

Although not shown in fig. 2 c, be appreciated that RAN104 can connect other ASN, core net 106 can connect other core net.Communication linkage between RAN104 and other ASN can be defined as R4 reference point, and this reference point R4 can comprise the agreement of the movement for coordinating WTRU102a, 102b, 102c between RAN104 and other ASN.Communication link between core net 106 and other core net can be defined as R5 reference, and this R5 is with reference to the agreement that can include the interworking be beneficial between homing core net and accessed core net.

According to current disclosed system and method, function below can be used by TVWS database (WSDB):

1) processing locality of channel inquiry, if wherein DSM server has and is supplied to channel inquiry to respond necessary all information, then the inquiry of the channel that undertaken by WSD by local DSM server process;

2) search extension, wherein WSDB transmits a part for available channel search to local DSM server;

3) assistance of available channel calculating, wherein DSM server provides local spectrum-sensing information to WSDB, calculates with the available channel improved in WSDB; And

4) daynamic bandwidth managment, to coexist the frequency spectrum of demand and problem, such as segmentation to help process.

In addition, also disclose realize above-mentioned value-added functionality and with the message of WSDB system interaction and process.

First, by the logic communication between the open DSM system according to different execution modes and WSDB, then the function for WSDB will be described, be then realize above-mentioned functions and with the process of WSDB system interaction and message flow.

Fig. 3 A shows and shows according to non-limiting embodiment logic communication between DSM and WSDB.FCC merge database system (CDBS) and the general licensing system of FCC (ULS) have recorded protected position and have permitted WSD channel (such as TV platform, wireless microphone), and are updated periodically by FCC.Block FCC is used for other communications between FCC and WSDB system.As detailed below, WSDB can WSD directly or indirectly with communication.

In some WSDB systems described herein or method, WSD can with WSDB direct communication in logic.Give an example, independent (standalone) WSD, such as WSD6, send the channel query messages of direct addressing to WSDB2.This message can carry out relaying by such as internet.WSDB2 generates the list of idle channel, then returns the channel comprising this list and replys message to WSD6.Hereafter can discuss the content of the different messages between WSD and WSDB in detail.

Fig. 3 A shows the mixing DSM framework according to some execution modes.Usually, WSD as DSM client, and can set up the connection with DSM server, and this DSM server can be the communication equipment of WSD, access point or other suitable type.As shown in Figure 3A, the cluster head that in fact can troop as WSD of DSM server.

In system and method described here, WSD can with WSDB direct communication.Such as, in figure 3b, WSD6 and WSDB direct communication is to obtain channel list idle in the geographic area residing for WSD6.In one embodiment, WSD6 and WSDB2 can exchange following message:

Message 1:WSD6 transmitting channel query messages is to WSDB2.Physics transmission can need not to be (1-hop) of single-hop, but under any circumstance, WSD6 and WSDB2 direct communication in logic, that is, message is addressed to WSDB2.

Message 2:WSDB2 searches for its database, calculates available channel, for WSD6 finds the list of idle channel, and return transmitting channel and reply message to WSD6, this WSD6 by utilize this message and, alternatively, utilize its local sensitive information to determine which channel it can access.

As detailed below, DSM framework can provide abundanter method to carry out channel inquiry.In addition, it allows channel inquiry and spectrum allocation may two processes to complete simultaneously.Such as, WSD transmitting channel query messages is to its DSM server.If DSM server has for this WSD finds all information needed for the list of idle channel, then DSM server will utilize this list and its sensitive information of having to complete spectrum allocation may, and transmitting channel replys message to WSD.Otherwise DSM server will represent WSD transmitting channel query messages to WSDB.WSDB transmitting channel replys message to DSM server, and this DSM server replys message and its perception information of having to perform spectrum allocation may by utilizing channel, and transmitting channel replys message to WSD.Figure 3 b show these interaction processes according to a non-limiting embodiment.If DSM server 1 does not have all information processed from needed for the channel query messages of WSD1, then message flow can be as follows:

Message 3:WSD1 transmitting channel query messages is to DSM server 1.

Message 4:DSM server 1 transmitting channel query messages to WSDB1, other relevant informations of statement ID, position and device type and WSD1.

Message 5:WSDB1 transmitting channel replys message to DSM server 1, for WSD1 specifies idle channel.

That message 6:DSM server 1 utilizes the channel that sent by WSDB1 to reply to comprise in message, for the list of the idle channel of WSD1, together with for DSM server 1 can sensitive information or other supplementary frequency spectrum usage datas, generate spectrum allocation may, and transmitting channel replys message to WSD1.

Now, when DSM server 1 have process from WSD2 channel query messages needed for all information, then message flow can be as follows:

Message 7:WSD2 transmitting channel query messages is to DSM server 1.

Message 8:DSM server 1 finds idle channel for WSD2, utilize such as DSM server 1 can the supplementary frequency spectrum usage data of sensitive information, produce spectrum allocation may, and transmitting channel replys message to WSD2.

In one embodiment, this channel is replied message and is provided more information than the channel reply message when independent WSD (WSD is not connected to any DSM server).Under an independent WSD situation, this channel is replied as this WSD specifies idle channel.But WSD still can must perform spectrum-sensing before determining to access which idle channel in idle channel.When WSD is connected to DSM server, channel replys message can be used in the spectrum-sensing information just considered when selecting single idle channel, specifies this individual channel (this channel can be adjacent or non-adjacent on frequency spectrum) or not allocated channel for preparing access WSD.

According to a non-limiting embodiment, for DSM server flow chart as shown in Figure 4.402, the channel massage from WSD is received.404, determine whether WSD has enough information and carry out processing channel inquiry.If have enough information, then 406, generate channel and reply message.Channel is replied message and can be specified such as the channel distributed of WSD.Then 416, message can be replied by transmitting channel.408, if DSM server does not have enough information to carry out processing channel query messages, then channel query messages can represent WSD and be sent to WSDB.410, determine whether that in time out period, receiving channel from WSDB replys message.If also do not received, then can generate channel 412 and reply message to forbid that WSD uses any channel.414, if DSM server receives channel from WSDB reply message, then can generate channel and reply message.This channel is replied message and can be specified such as the channel distributed of WSD.416, channel replys the WSD that message can be sent to originally transmitting channel query messages.

According to another non-limiting embodiment, for DSM server flow chart as shown in Figure 4 A.420, receive white spatial frequency spectrum data from white spatial data repository service device.White spatial frequency spectrum data can comprise available frequency range data.Usually, white spatial frequency spectrum is frequency spectrum that can be licensed, allows the operation of the particular type of non-permitted device wherein.Such as, different white Space Facilities can be allowed on precalculated position and channel (such as frequency range) and run, and this channel both not used by licensee on this position, not licensed yet.An example of white spatial frequency spectrum is the white spatial frequency spectrum of TV, licensedly gives broadcaster in specific region, but is currently but not yet used.White spatial frequency spectrum data can comprise the information about white spatial frequency spectrum, and this white spatial frequency spectrum comprises not licensed frequency spectrum.It also can comprise available frequency range data as described below.It can also comprise other information, such as location identification data, or other of not licensed frequency spectrum describe or feature, such as channel certain power restriction, guard band model (template) demand, time restriction/restriction.White spatial data repository service device (such as WSDB) can in order to the static state of usable spectrum scope, position specific frequency spectrum information or dynamic data base.In some embodiments, white spatial data repository service device can be followed the tracks of special in permanent disabled frequency spectrum.Usable spectrum range data can be the information for identifying usable spectrum in white spatial frequency spectrum.Such as, it can be analog TV channel indicator or channel id.Alternatively, it can have centre frequency and the be associated form of bandwidth (clear and definite or implicit) or the paired list of such as frequency.About the white space of TV (TVWS), TVWS channel can be fixed as each channel 6MHz (such as channel 23 always represents 524-530MHz).Available frequency range data can represent according to channel number.In addition, if two or more continuous print channels can be used, then white space channel is selected to collect available channel, and bandwidth can be increased to 10MHz, 15MHz, 20MHz etc.That is, different radio access technologies can utilize multiple continuous print channel width.Such as, LTE and WIFI can be deployed on the single TVWS channel (6MHz) of use 5MHzOFDM bandwidth, or on two the continuous T VWS channels using 10MHzOFDM bandwidth, or on four the TVWS channels using 20MHzOFDM bandwidth.

422, store and supplement frequency spectrum usage data.Supplement frequency spectrum usage data can comprise, such as described below for DSM obtain optimized frequency range data can other information.Therefore, supplement the information that frequency spectrum usage data can comprise reflection current spectral using state, and this information can comprise the spectral measurements from WSD, the current use distributing/ used frequency spectrum from DSM or reciprocity DSM maps etc.Current spectral using state can comprise the specific radio access technologies used, and how definition uses this technology to be beneficial to the key parameter coexisted, the scrambler (such as PHY community ID) such as used or time reference.In some embodiments, supplement frequency spectrum usage data and can comprise the relevant information of white space access point.Such as, access point interrelated information in white space can identify overlapping AP coverage.Use relevant information, DSM server can by identifying that for given AP other which AP have overlapping coverage in TVWS, and each AP come for it controls sets up mapping relevant in logic.DSM can use this information to determine interference potential between AP that is under it directly controls or that controlled by other DSM server.Such as, this correlation can be released by the geographical position of each AP, also can by AP itself collect or supplemented by the spectrum-sensing information of originating from other.Information from other DSM server (reciprocity DSM equipment) can be obtained to form relevant mapping by DSM server.Such as, WIFIAP can will cause the relative signal strength report of the SSID of the contiguous AP disturbed and contiguous AP to this DSM server.In LTE, HeNB can by the information of contiguous AP and its be associated SSID and contiguous HeNB and its related physical community ID, the reports such as PLMN network identity may be also had to DSM server.Identical information can relay to other DSM server affected.Supplement frequency spectrum usage data and can also comprise spectral measurements.Spectral measurements can obtain from one or more white Space Facilities access point (WSD-AP).Spectral measurements can be obtained by one or more WSD or other spectrum measurement technology.Spectral measurements can comprise the SSID information of other WSD-AP, or LTE community ID, and can comprise corresponding power level.Instruction 802.11 technology, LTE or other technologies can be comprised whether by the radio access technologies identifier used.Spectral measurements can use the form of measurement report such as transmitting between reciprocity WSD-AP, between reciprocity DSM or between WSD-AP and DSM with channel.

424, channel query messages is received.Such as channel query messages can be received from WSD (WSD/AP) by DSM.

426, channel is replied message and is transmitted.Channel replys message can comprise such as at least one preferred frequency range data.These at least one preferred frequency range data can be based in part on white spatial frequency spectrum data and supplementary frequency spectrum usage data is determined.These at least one preferred frequency range data can be determined based on identification and the current adjoining available frequency range of frequency spectrum that used.In some embodiments, these at least one preferred frequency range data are determined based on contiguous frequency spectrum criterion.These at least one preferred frequency range data can comprise the information being sent to WSD/AP, can selective channel by this information.Described data can also comprise other channel datas, and such as but be not limited to, the specific control message of the restriction of channel certain power, guard band model requirements, time restriction/restriction and/or channel transmits demand.That is, some channels can have particular demands (such as using heartbeat mechanism to use to indicate continuous print).These preferred frequency range data can transmit with any suitable form, such as, be similar to the form (that is, using the paired list etc. of TV channel indicator/ID, centre frequency and bandwidth, frequency) of " available frequency range ".In one embodiment, this optimized frequency comprises channel list.This channel list can comprise channel preference information.

In time identifying preferred frequency range, DSM or WSD-AP can use the mode of larger adjacent block in the frequency spectrum remaining and do not have to use to select frequency range or channel, thus can provide service for asking other channels of relatively large frequency spectrum to be inquired about.That is, if the selection of a channel contributes to the block retaining contiguous frequency spectrum, although then the selection of another channel contributes to splitting remaining usable spectrum, first channel is preferred.Alternatively, the reservation of contiguous frequency spectrum can perform based on geographic area.Namely, in the first geographic area, the reservation of contiguous frequency spectrum block can have precedence over other regions, thus because be considered to have priority, the reservation of adjacent block in contiguous or overlapping region, make the Channel assignment causing occurring spectral slice in a region still can be preferred.Contiguous frequency spectrum priorization can also based on the statistics used, thus frequently ask the area preference of high bandwidth in other regions.When the one or more optimized frequency scope of identification or when sorting for available frequency range, the different execution modes of contiguous frequency spectrum management described here and/or priorization can be considered to use contiguous frequency spectrum criterion.In some embodiments, the channel list of available channel is supplied to WSD-AP, and then in time identifying the frequency range that will use, WSD-AP can adopt this contiguous frequency spectrum criterion.In other embodiments, WSD-AP can communicate with white spatial data repository service device, and then carrys out selective channel to reduce fragment according to contiguous frequency spectrum criterion.In some embodiments, DSM server can also be selected from WSD/AP receive channel reply message with indicating channel.The all right receive channel acknowledge message of DSM server is with the use of indicating channel.Such as, channel confirmation message can be the instruction (such as passing through ACK message) that channel is using, and it can be selected to use by which channel in recognized list, or it can comprise other channels and confirms data.According to a non-limiting embodiment, Fig. 4 B shows DSM equipment 430.DSM equipment 430 can comprise processor 432 and computer storage 434, or other computer readable mediums communicated with processor 432.The software with the instruction 436 performed by processor 432 can be stored in computer storage 434.Processor can perform this software to perform different functions, than Dynamic Spectrum Management as described in this.DSM equipment 430 can comprise one or more processor 432 and one or more computer storage 434.For simplicity, only have a processor 432 and only have a memory 434 to be shown in figure 4b.Processor 432 may be implemented as the integrated circuit (IC) with monokaryon or multinuclear.Computer readable medium or memory can comprise volatibility and/or Nonvolatile memery unit.Such as, volatile memory-elements can comprise random access memory (RAM).Nonvolatile memery unit can comprise such as read-only memory (ROM), and mechanical type nonvolatile memory system, such as hard disk drive, CD drive etc.RAM and/or ROM memory cell may be implemented as the memory IC be such as separated.

According to a non-limiting embodiment, Fig. 4 C shows the framework of DSM server 440.Can consider by one or more processors of executive software instruction to realize the disparate modules of equipment.DSM server 440 can comprise white spatial database management module 442.White spatial database management module 442 can be configured to store to make clear one's meaning and position the white spatial frequency spectrum data of spatial data repository service device.White spatial frequency spectrum data can comprise available frequency range data.DSM server 440 can also comprise the supplementary data storage module 444 being configured to store supplementary frequency spectrum usage data.DSM server 440 can also comprise and be configured to identify the correlation module 446 about supplementary data based on white Space Facilities positional information at least in part.DSM server 440 can also comprise the channel list generation module 448 being configured to identify at least one preferred frequency range data.This at least one preferred frequency range data division ground is determined based on white spatial frequency spectrum data and supplementary frequency spectrum usage data.DSM server 440 can also comprise the communication module 450 being applicable to communicate with reciprocity DSM, white Space Facilities and white spatial data repository service device.

When WSD needs transmitting channel query messages time, whether its test conditions present is that it is connected to DSM server.If so, then it will transmitting channel query messages to DSM server, and access package is contained in channel replys channel in message.On the other hand, if WSD is not connected to DSM server, but but know to there is WSDB, then it will be inquired about to WSDB by transmitting channel.When channel reply message returns from WSDB time, which channel that can access in this list is determined in the list of the idle channel used in channel reply message and its local spectrum-sensing information by WSD.

According to a non-limiting embodiment, Fig. 5 shows the flow chart for WSD.502, determine whether to need transmitting channel query messages.504, determine whether WSD is connected with DSM server.If no, then 506, determine whether WSD knows any WSDB.If do not known, then report unsuccessfully 508.If WSD knows WSDB, then at 510 transmitting channel query messages to WSDB.512, determine that in time out period, whether receive channel replys message.If have received channel to reply message, then 514, this channel reply message and sensitive information can be used to the channel determining to access.Access channel is prepared at 516, WSD.If determine that WSD is connected to DSM server 504, then can at 518 transmitting channel query messages to DSM server.520, determine that in time out period, whether receive channel replys message.If do not received, then report unsuccessfully 508.If receive channel to reply message, then prepare this channel of access at 516, WSD.

In some embodiments, supplement frequency spectrum usage data to obtain at white Space Facilities access point (WSD-AP) place.According to a non-limiting embodiment, Fig. 5 A shows the flow chart for WSD, and 530, supplementing frequency spectrum usage data can obtain at white Space Facilities access point (WSD-AP) place.532, channel query messages is transmitted.534, channel is replied message and is received.Channel replys message can comprise at least one preferred frequency range data.536, be based in part on channel and reply message and supplementary frequency spectrum usage data and carry out selective channel.In some embodiments, transfer channel acknowledge message the channel selected can be indicated.The confirmation of this channel can be the message of any suitable type, such as ACK message, or alternatively when channel reply message includes the list of channel, in recognized list, which channel has been selected to use.In some embodiments, the Channel reconfiguration message from Dynamic Spectrum Management (DSM) equipment can be received at WSD-AP place, and message can be changed to the white Space Facilities of client by transfer channel.

Under Wifi (IEEE802.11) scene, AP can use channel-changing to state the change broadcasting a channel, the statement of this channel-changing both can pass through CSA (channel switches statement) in a beacon or ECSA information word usually sends, and can also send as independent MAC action action frame.CSA comprises the information about new channel, and instruction switches to the time of new channel.Accompanying drawing 5B shows the example CSA information field switching statement.

In LTE, HeNb can be used in the RRC signaling sent in main plot to be carried out transmitting channel and changes to UE.Main plot can use such as the different frequency bands of licensed spectrum and so on.In some embodiments, channel-changing can be realized by two continuous print message.First, first RRC information uses RRC reconfiguration message to stop running time (secondary) community on current TVWS channel.The second, another RRC information activates time community by RRC reconfiguration message and runs on new TVWS channel.

With reference now to Fig. 6, in some embodiments, interface can also be had between one or more DSM server.This interface can help DSM server to share TVWS channel information, and them can be assisted to realize the more complete diagram of TVWS frequency spectrum.

Interface between this DSM may be used for the object coexisted.Start when DSM receives the list from the channel of WSDB time, it can know that the WSD which channel has been running under other DSM server used, and therefore this DSM server will obtain the information of the channel that other are running with " between DSM " interface.Then, it will select idle channel from initial available channel list, namely in this geographic area be not just the channel that uses by other DSM server/clients.As described in detail below, this communication process will use message to realize by channel.

In some embodiments, DSM interface can realize in WSD rank.Such as, its interface can have identical function, but is not but realize in DSM rank, and it is shared in the spectrum information in WSD rank.Such interface is for independently WSD can be more useful, and as shown in Figure 7, this WSD can be directly connected to WSDB.

This " between WSD " interface can also be used for coexisting in TVWS.Described WSD can share the information about the channel run in TVWS, and " between WSD " interface can be used to assist mutually to carry out Channel assignment.This will eliminate or at least reduce the possibility of the same channel in two WSD selection TVWS in same geographical area.In some embodiments, hybrid system can be used by " between DSM " and " between WSD " interface.

In addition, point-to-point (Adhoc) pattern may be used for the process of local channel inquiry.Under this scheme, WSD is peer device.If WSD is connected with WSDB, obtained and saved the list of idle channel, then the information on idle channel may be used for the WSD of its neighborhood equally, this is because contiguous WSD may fall into the geographic area arranged by this WSDB.

In some embodiments, channel availability information is associated with one or more timer.Such as, each channel in idle channel list can have independent timer.It is out-of-date that idle channel can be marked as, or be eliminated from the list when its r expires time.

In some embodiments, when independently WSD transmitting channel query messages is to WSDB time, this WSDB is returned as this WSD and specifies the channel of the list of idle channel to reply message.Independently WSD typically can have confined spectrum-sensing ability, this is because it only can access the spectrum measurement carried out a position.In some embodiments, at least one DSM server near independent WSD helps this independent WSD.Such as, independent WSD transmitting channel query messages is to WSDB, and this WSDB can work together with the one or more DSM server near this independent WSD, and is that this independent WSD produces spectrum allocation may jointly.Therefore, WSDB can by the search extension of the available channel for WSD to DSM server.

In some embodiments, search extension can also be applied to the WSD under the DSM server with limited sensing function.For those DSM server, when they receive channel query messages from WSD time, WSD message can be forwarded to WSDB by them, and this WSDB attempts working together with other DSM server, to process the inquiry of this channel.In one embodiment, this process by WSD directly or via have limited sensing function DSM server transmitting channel inquire about come to WSDB.Then this WSDB can be the list that this independent WSD searches idle channel.This WSDB can also search the position whether having DSM server to cover this WSD.If no, then transmitting channel is replied message to WSD by this WSDB, specifies the list of idle channel.On the other hand, if there is a DSM server, then this WSDB will represent this WSD transmitting channel query messages to this DSM server.Then, when the channel inquiry from WSDB arrives DSM server time, this DSM server can find the list for channel idle this WSD, and transmitting channel replys message.When the channel reply message from DSM server arrives this WSDB time, the list that this list can generate in conjunction with it by this WSDB (such as, mode by " with (AND) "), determine which channel WSD can access, and then transmitting channel replys message to WSD.

As an example, consider WSD6 as shown in Figure 8.In one embodiment, message flow is as follows:

Message 1:WSD6 transmitting channel query messages is to WSDB2.

Message 2:WSDB2 have found the list for channel idle WSD6, and searches the DSM server of the position covering WSD6, and finds DSM server 2.WSDB2 represents WSD6 transmitting channel query messages to DSM server 2.

Message 3:DSM server 2 finds the list of unoccupied channel on the position of WSD6, and transmitting channel replys message to WSDB2.

Message 4:WSDB2 selects the channel existed in two lists, generates channel and replys message, and send it to WSD6.

According to different non-limiting embodiment, Fig. 9 shows the flow chart of DSM server process from the channel query messages of WSDB, and according to different non-limiting embodiment, Figure 10 shows WSDB by available channel search extension to the flow chart of DSM server.

With reference now to Fig. 9,902, from WSDB receive channel query messages.904, obtain the position of independent WSD in message.906, search the unoccupied channel on this position, and put it in channel reply message.908, transmitting channel replys message to WSDB.

With reference now to Figure 10,1002, receive the channel query messages from WSD.1004, for WSD obtains the list (L of idle channel _a).1006, determine whether that DSM server covers and (such as managed) this WSD.If no, then 1008, generate the list (L comprising idle channel _a) channel reply message.If there is DSM server to cover this WSD, then 1010, represent WSD transmitting channel query messages to DSM server, 1012, determine that in time out period, whether receive channel from this DSM server replys message.If do not received, 1008, generate the list (L comprising this idle channel _a) channel reply message.If receive channel to reply message, then 1014, reply from this channel the list (L that message obtains unoccupied channel _b).1016, can select to be in L _aand L _bchannel in the two.1018, transmitting channel replys message to WSD.

In addition, in some embodiments, DSM system can assist available channel to calculate, and this calculating has been come to WSDB by transmitting spectrum sensing result by WSDB.Various mode can be had to provide this assistance, such as use try to be the first mode or reactive mode.

When mode is tried to be the first in use, DSM system can be tried to be the first and be sent spectrum sensing result to WSDB, then in there is significant change during the frequency spectrum observed at it uses, upgrades spectrum sensing result.

When using reactive mode, WSDB can on an as-needed basis to the spectrum sensing result of DSM server inquiry specific location.

In two kinds of modes, WSDB can obtain spectrum sensing result from one or more DSM server near interested position.It can improve the calculating of available channel in conjunction with spectrum sensing result.

Usually, mode of trying to be the first when frequency spectrum use change slowly time can have more high efficiency, and when frequency spectrum use change fast time may become poor efficiency, this is because update times can increase.Reactive mode is then contrary.It may be inefficient when frequency spectrum uses and changes slowly, this is because each calculating of available channel all may cause the inquiry to spectrum sensing result, and this inquiry brings similar spectrum sensing result.When frequency spectrum use changes faster time, reaction method may become more efficient, this is because WSDB only just inquires spectrum sensing result when needs, eliminates the transmission of all sensing updating message that may be numerous.

Figure 11 shows according to a non-limiting embodiment, the flow chart of the DSM server of mode of trying to be the first.As shown in the figure, 1102, the process of mode of trying to be the first can comprise DSM server and set up the connection with WSDB.1104, can send comprise all channel spectrum sensing result initial sensing report message to WSDB.1106, if there is significant change in spectrum sensing result, then 1108, DSM server can send sensing updating message to WSDB, and this message only lists those channels experiencing change after recent renewal.Then WSDB can use the spectrum sensing result received from all DSM server, for the calculating of its available channel is carried out in specific channel inquiry.

According to different non-limiting embodiment, Figure 12 and Figure 13 respectively illustrates according to the flow chart of reactive mode for WSDB and DSM server.Such as, the process of reactive mode can comprise, once WSDB receives channel query messages, then its extract location information from message, searches the DSM server covering this position, and sends sensing query messages to each in those DSM server.Once receive sensing query messages, each DSM server returns sensing and replys message to WSDB.Now WSDB can reply the spectrum sensing result in message in conjunction with sensing, calculates available channel, forms channel and reply message, and returned the transmit leg being sent to this channel query messages.

With reference now to Figure 12, inquire about at 1202, WSDB receive channel.1204, the position (X) in channel query messages can be extracted.1206, to form list (L) after the DSM server of position (X) is identified.1208, determine whether this list (L) is empty.If this list is empty, then 1210, calculate available channel, and 1218, transmitting channel replys message.If this list (L) is not empty, then 1212, send sensing query messages to each DSM server in list (L).1214, determine whether WSDB receives one or more sensing and reply message in time out period.If do not received, then 1210, calculate available channel, and 1218, transmitting channel replys message.If receive one or more sensing to reply message, then 1216, can in conjunction with this sensing result to calculate available channel.1218, transmitting channel replys message.

With reference now to Figure 13,1302, DSM server receives sensing query messages from WSDB.1304, can from this message extracting position (X).1306, find the spectrum sensing result of this position (X).1308, set up sensing and reply message and send it to WSDB.

daynamic bandwidth managment

Usually, in North America, each available TV channel in TVWS provides the 6MHz spectrum capabilities that can be used for broadband connection.TVWS channel can change based on geographical position.Such as in Europe, TVWS channel is generally 8MHz.Due to the long propagation at these frequency place signals, TVWS has relatively large overlay area.

When frequency band can use on a position, just there is large region, this frequency is not used and be can be used for wireless connections in this region.WSDB can follow the tracks of all (or at least some) frequencies used at diverse location.Therefore, WLANAP must by oneself to TVWS database registration.AP sends its positional information to database, and thus it can receive the spectrum information that AP can run.Do not allow to run unregistered WSD in TVWS.

Central hub or AP (referring to WSD-AP here) are to TVWS database registration.Registered WSD sends its positional information to database, then receives the list of available channel from TVWS database.WSD-AP can use TCP/IP network stack to be communicated with TVWS database or DSM server by non-wireless infrastructures.Alternatively, WSD-AP can use radio communication to communicate in licensed frequency spectrum.That is, the communication of communication between WSD-AP, WSD-AP and WSDB and DSM equipment is may be used for here about the radio infrastructure described by Fig. 2 A-2C.The ability of the WSD that AP is managing based on its ability and it, selects available channel.Then on the channel selected, network is set up.

The mode of selective channel may cause the waste of bandwidth.When from given bandwidth the mode of selective channel make to select after remaining bandwidth become unavailable or otherwise limit its use due to fragment time, just there will be a problem.And the WSD run in same area will receive the almost identical list of available/idle channel.This may cause WSD to use same channel, then will lead to a conflict and performance degradation.

In different embodiments, DSM system dynamically can manage the use of different frequency bands in white spatial frequency spectrum together with WSDB.Such as, system and method described herein can reduce or sometimes eliminate not spendable fragment in white spatial frequency spectrum in order to try.In some embodiments, be wasted the poor efficiency of bandwidth (that is, detect use) once determine frequency spectrum, will indicate different equipment suitably switching channels to correct this problem.

Such as, mapping by observing the frequency spectrum shown in Figure 14, can find out when WSD2 leaves network time, creating the fragment of two 10MHz.If such as other equipment of access point (AP) and so on want the network setting up it in 20MHz bandwidth, that just can not realize, this is because the usable spectrum of the 20MHz not having continuously/adjoin.As detailed below, according to system and method described herein, WSD3 can move to the right side immediately preceding WSD1, thus produces the continuous frequency spectrum of 20MHz.And WSD3 can be moved to other parts of frequency spectrum, thus produce more continuous print frequency spectrums.

Figure 15 shows the example of the problematic allocated bandwidth for WSD.Suppose that WSD has been assigned with the bandwidth of 40MHz, and operate on the channel of 20MHz, then the central point of given bandwidth is selected as centre frequency.As shown in figure 15, the remainder of frequency spectrum is the block of channels that respectively there is 10MHz both sides.Therefore, if another WSD run in same position has on the 20 mhz channels been given identical usable spectrum, so just can not have selected the channel of a 20MHz and not clash with the communication of setting up.Although wish that two WSD can access (CSMA) by Carrier Sense Multiple or other media technology of sharing carrys out shared identical channel, this function but may reduce throughput.

Figure 16 shows and applies with TVWS the Similar Problems be associated.As shown in figure 16, in the U.S., although may change based on compass of competency, between contiguous TV channel, there is the spacing of 6MHz.In the example illustrated, WSD has been given the list of four available channels (such as channel 38-41).Suppose that WSD operates on the channel of 10MHz, then it can select the center of allocated frequency band as centre frequency.As shown in figure 16, in frequency band, remaining free space is channel 38 and channel 41 (i.e. each 6MHz in every side).If another WSD operated in same position on 10MHz channel has been given identical channel list, then this WSD will run into and the Similar Problems shown in Figure 15.This problem can be called as " channel fills up (pack) ".

According to system and method described herein, if the centre frequency of the WSD selected can from the center of allocated frequency band as far as possible away from, the problems referred to above just can solve.As disclosed herein, this channel can selected by any suitable equipment, such as AP, DSM or WSD.But this area routine techniques personnel all understand, can have other network managers (such as, cellular basestation, Node B and IEEE802.16 base station etc.), they can realize system and method described herein with selective channel in TVWS.

If this solution is applied to the problem described in Figure 16, so as shown in FIG. 17 and 18, WSD both can the border of selective channel 38 and channel 39 as centre frequency, also can the border of selective channel 40 and channel 41 as centre frequency.

Figure 17 and 18 shows a scene, and the central point wherein from allocated frequency band have selected centre frequency as far as possible.Such spectrum arrangement is that other AP in this region with channel same list provide and can select another 10MHz channel and the chance that can not clash.

Unique criterion of Channel assignment described herein rule not necessarily selective channel.Also can consider such as to alleviate interference, bandwidth collects and other factors such as network management.And, as mentioned above, in time identifying optimized frequency scope, DSM or WSD-AP can not have the mode of larger adjacent block in the frequency spectrum used to select frequency range or channel by reservation, thus can use other channels inquiry relatively large in request frequency spectrum.That is, if the selection of a channel contributes to the block retaining contiguous frequency spectrum, although the selection of other channels is tending towards splitting remaining usable spectrum, now first channel is preferred.Alternatively, the reservation of contiguous frequency spectrum can come based on geographic area.Namely, in the first geographic area, the reservation of contiguous frequency spectrum block can have precedence over other regions, thus because be considered to have priority, the reservation of adjacent block in contiguous or overlapping region, make the Channel assignment causing occurring spectral slice in a region still can be preferred.Contiguous frequency spectrum priorization can also based on the statistics used, thus frequently ask the area preference of high bandwidth in other regions.Therefore, as described in detail below, different factors or scene may be had and help WSD and select the centre frequency shown in the centre frequency shown in Figure 17 or Figure 18.

In one embodiment, TVWS database is passive database, and this database does not receive any feedback from WSD in the list of transmitting channel after WSD.Therefore, TVWS database does not know the channel that WSD is using.In this implementation, WSD must sense all possibilities, and selects idle channel.With reference to Figure 18, operate on channel 38 and channel 39 if WSD senses WSD, then the border of channel 40 and channel 41 can be selected as the centre frequency of 10MHz channel.On the other hand, if all channels all can be used, then WSD can any one channel in channel described in Stochastic choice.

In one embodiment, TVWS database is active database, and this database receives the feedback about selective channel.Such as, this feedback can be sent to TVWS database by WSD.In this implementation, the problem shown in Figure 16 does not occur, this is because another WSD has inquired the list of channel, TVWS database can not send the channel (being namely the WSD shown in Figure 16) that other WSD use.But, if two WSD are in the list of synchronization request channels, or sent identical channel list to two or more WSD before receiving feedback from any WSD, then the problem of Channel assignment may occur.In order to avoid this problem, WSD before starting a channel in the channel from TVWS list transmits, can enter random back (backoff) pattern.After fall-back mode is expired, WSD can in certain time sense channel.If channel is idle, then WSD can retain that channel from this list.Then, other WSD then carrying out same steps can be used in other channels (if available) of the opposite side having distributed frequency spectrum.When two or more WSD are partial to the side of usable spectrum time, this problem will be there is.This deflection may have many reasons, includes but not limited to: transmitting power restriction, transmit mask, be security purpose and the adjacent channel, scope etc. that retain.

Term " active database " also can refer to any system, and such as, IEEE802.19.1 symbiotic system, its attempts management, and one or more operates in network in TVWS, and can rely on the information provided by TVWS database.

As shown in figure 15, when a WSD or group WSD under AP operation has occupied channel time, compulsory channel switch step (being called as responsible WSD below) can have been adopted.In the case, the vacant breach of two 10MHz on every side wastes the useful frequency spectrum of 20MHz.In some embodiments, when another WSD is distributed in same frequency spectrum by TVWS database time, this WSD by attempt from this frequency spectrum as far as possible away from channel on set up network.As shown in figure 15, in this situation, when its attempt set up network at frequency spectrum two ends time, it by by use intermediate spectral responsible WSD block.Therefore new WSD can estimate that middle 20MHz bandwidth is used, although also have the available block of two 10MHz at end.In some embodiments, described estimation can cause new WSD to initiate the switching of compulsory channel.The network (being such as responsible for WSD) set up can use method to be below forced to switch its operation channel.

When active database, responsible WSD is moved to new channel by the help that new WSD can seek database.It can send about the discovery that frequency spectrum uses and feed back to this database by new WSD.With reference to Figure 15, the last 20MHz of 20MHz or frequency spectrum before database can use its logic to come to distribute frequency spectrum to responsible WSD.Now, remaining bandwidth can be assigned to new WSD.

In some embodiments, new WSD is directly communicated with responsible WSD by high priority signaling.New WSD can transfer request message, and to notify the new centre frequency that responsible WSD should move to, or it can send the list of possible centre frequency to on-job WSD.Alternatively, once the channel completed to new frequency switches, responsible WSD just can be asked to send acknowledge message.In some embodiments, responsible WSD must in the predetermined period of time that timer is determined switching channels.After new WSD confirmation of receipt message or timer expiration, it can bring into operation (20MHz in such as Figure 15) in new usable spectrum.In order to avoid conflict, new WSD before operating in new usable spectrum, can monitor or sense the current use being assumed that idle channel.In various embodiments, direct communication between different AP can be carried out by symbiotic system.

The AP operated according to system and method described herein, can scanning neighboring frequency regularly, to have checked whether that adjacent channel is idle.If immediately preceding the channel idle on the right side of AP, then AP may operate in frequency spectrum central authorities, thus causes inefficient Bandwidth Management.In the case, once AP be realised that this situation by adjacent channel scanning of trying to be the first, then this AP can attempt its network to move to from new usable spectrum center as far as possible away from new channel.This can pass through following process implementation, such as, sends handover request and confirmation of receipt before switching to new channel to active database, or handover network is to new channel and transmission informational message extremely passive database.

Figure 19 shows three networks operated in given frequency spectrum.Network A operates on the channel of 20MHz, and occupies the front 20MHz of frequency spectrum.Network C operates on the last 10MHz of frequency spectrum, and network B occupies the 10MHz of adjacent network C.If the channel that network C takies is because some reason becomes idle, then network B will be in the centre of new frequency spectrum.By the scan channel of trying to be the first, the AP in network B will know the centre that it is in 30MHz frequency spectrum.Now, AP can initiate channel switching process to be switched to the either side of frequency spectrum.By the channel of handover network B, the use for certain other network opens by the continuous frequency spectrum of 20MHz.

In some cases, network may not move to the edge of frequency spectrum.This restriction is because the reason of various management and/or transmitting power restriction (such as, according to the appointment of FCC demand, the network using high transmit power to run can not be close to TV broadcast singal and run).High transmit power network usually runs between channel at TV broadcast channel and its and leaves some intervals, with the demand of satisfied management.In frequency spectrum, this free space can cause " channel fills up " problem foregoing.

Figure 20 shows " fragment of waste " between TV broadcast and " high transmit power " AP.If another AP needs 10MHz bandwidth of the transmit power needs meeting contiguous TV broadcast and run, so it can not run on frequency spectrum as shown in figure 20, unless it makes " high transmit power ", AP moves its centre frequency, thus creates enough frequency spectrums for new " low transmitting power AP ".As previously mentioned, the type (such as, passive or active) of the TVWS database that can connect according to AP, performs the channel-changing of responsible AP.In some embodiments, high priority signaling (or certain symbiotic system) may be used for other AP notify current have low-power network exist and this network asks frequency spectrum.Then, this signaling channel (or symbiotic system) can coordinate the channel-changing of " high transmit power " AP, comes to discharge bandwidth for " low transmitting power AP ".

According to the method be used for for " high transmit power " AP selection initial launch channel, this situation just can be avoided.Such as, as shown in figure 21, disclose according to current, " high transmit power " AP should set up its network, thus leaves sufficient interval (such as, the interval of two TV channels).Therefore, according to system and method described herein, TV can not be close to broadcast and the AP of operation should after leaving sufficient space (such as, 2,3 or 4 TV channels) attempt the network setting up it, thus one or more low transmitting power AP can set up their network in this free space.Similarly, when DSM system is used to AP to be dispensed to particular channel time, this AP should be dispensed to the portions of bandwidth that can reduce fragment by this DSM system.

In some cases, all available TV channels can shared by different networks.When passive database, the list of available TVWS channel (such as not by the channel of TV broadcast use) can be supplied to AP by passive database.Because do not feed back to passiveness server, therefore database will not know this channel shared by heterogeneous networks.When AP determines that all channels are occupied time (such as, by sensing or some other symbiont techns), this AP can ask one or more AP to reduce their operation bandwidth.New AP via the direct communication of AP to AP, or if applicable by some symbiotic systems, can send a bandwidth reduction request message to different AP.This request message can comprise such as, the mark (ID) of request AP, channel number, the bandwidth of request, the time, position etc. needed for bandwidth on demand.So ask AP that the bandwidth waited for from requested AP is reduced reply.Reply message can comprise such as, ID, channel number, the bandwidth of distribution, the time of the bandwidth of distribution of response (accept, refusal), AP, bandwidth can with the time cycle, position etc. before.

In time asking AP to receive " accepting " response message from other AP, request AP sets up its network according to the information provided in response message, and then can send confirmation to requested AP.

In some embodiments, can distribute for AP the bandwidth being less than bandwidth on demand.In this case, AP can inquire about other AP or select to accept given bandwidth.And, can at the appointed time measure interior distribution bandwidth for this request AP.

When active database, AP can transmitting channel query messages to database.Then database can send bandwidth reduction request to one or more different AP, then receives response.Once database receives the response from AP, it just send allocated channel information to this request AP.If database have received more than one " accepting " response, then can select in AP (or multiple) AP, and reduce its bandwidth run according to different factor requests, type of these factors such as regulatory requirement, the bandwidth provided, time availability and/or flow etc.In some embodiments, as shown in figure 22, " between DSM " and " between WSD " interface may be used for the frequency spectrum that whether there is fragment to other DSM server notice.The DSM server that then can solve this problem takes correct action, solves this problem.

With reference now to Figure 22, when WSD2 leaves network time, it create the fragment (as shown in figure 19) of 10MHz.DSM server 1 can be configured to note this fragment, and notifies other DSM server via message 1 (that is, a fragment/waste instruction).After DSM server 2 receives this instruction, it can be configured to solve this situation by being moved to by WSD3 in new frequency.DSM server is by transmitting channel releasing request (message 2) to WSD3, and if this request is accepted, transmitting channel is changed response (message 3) by WSD3.In some embodiments, DSM server 2 indicates this to convert by message 4 to WSDB.

Figure 22 A shows and to stop for DSM according to a non-limiting embodiment or at least to reduce the flow chart of technology of spectral slice.2202, obtain frequency spectrum usage data for WSD-AP from reciprocity DSM equipment, this WSD-AP is managed by described reciprocity DSM equipment (WSD3 in such as Figure 22).2204, the WSD-AP for local management transmits frequency spectrum usage data to reciprocity DSM equipment.2206, transfer channel reconfiguration message to reciprocity DSM equipment, with change the frequency spectrum that uses by least one WSD-AP of this reciprocity DSM equipment control.In some embodiments, frequency spectrum usage data can comprise WSD-AP positional information, power level information, radio access technologies information and/or WSD-AP identifying information etc.

In some embodiments, daynamic bandwidth managment can also be realized via " between WSD " interface.Figure 23 shows " between WSD " interface, to solve the problem shown in Figure 21.When WSD2 leaves network time, WSD1 and WSD3 receives instruction (message 1) by " between WSD " interface.In some embodiments, WSD2 can try to be the first and send this instruction to WSD1 and WSD3 (before this WSD2 leaves network).In some embodiments, WSD1 and WSD3 is that " heartbeat (heartbeat) " obtaining WSD2 monitors " between WSD " interface.This heartbeat signal can such as be used entrained by message by periodic channel.Lack this heartbeat (such as, based on the value of some time-out) and will show that WSD2 have left network.This heartbeat may be implemented as the broadcast singal (such as AP beacon) of certain form.Once WSD1 and WSD3 have received instruction, they can check whether that they can solve described problem.In this case, WSD3 can be solved described in this by the running frequency switching it and inscribe.Now, WSD3 will change its centre frequency, and send instruction alternatively to WSDB (message 2).Note in some embodiments, the solution that WSD1 and WSD3 can use " between WSD " interface to consult to agree to mutually (such as, in some cases, change WSD1 running frequency or will be all favourable for both WSD1 and WSD3 change running frequency).

In some embodiments, this mechanism (such as, by using channel to use reservation to ask message) can be expanded by the ability giving WSD and DSM server reservation broadcast channel use information.

Figure 22 A is for stoping or at least reduce the flow chart of technology of spectral slice according to a non-limiting embodiment.At W1, the frequency spectrum of segmentation uses and is identified.At W2, analyze access point relevant information.At W3, configuration has the adjacent block of usable spectrum.Such as, this adjacent block can be configured by transfer channel reconfiguration message to white space access point apparatus.

In some embodiments, segmentation frequency spectrum use identify by DSM server.By one or more technology, DSM server can determine that the frequency spectrum that there is segmentation uses, such as spectrum measurement is responded, or alternatively according to the deexcitation of WSD-AP, as by comprise from WSD-AP un-register message and message transmission between WSD-AP, or receive the failure of one or more WSD-AP heartbeat message.In some cases, to DSM server, reciprocity DSM can notify that this reciprocity DSM is managing WSD-AP has been deactivated or by un-register.

In some embodiments, WSD-AP identifies that the frequency spectrum of segmentation uses.Such as, in response to spectrum measurement, WSD-AP can determine that the frequency spectrum that there is segmentation uses.WSD-AP can scan relevant frequency spectrum to identify other reciprocity WSD-AP, and obtains WSD-AP identifying information, such as other identification parameters of SSID, community ID or its peers include both.WSD-AP can by this communicating information to DSM equipment, or can with reciprocity WSD-AP direct communication.In the execution mode that reciprocity WSD phase intercoms, WSD-AP can use identifying information to inquire about WSD registration database, with obtain such as IP address and so on the address of reciprocity WSD-AP.Alternatively, WSD-AP can use reciprocity discovery technique to set up communication.Now, WSD-AP can communicate with reciprocity WSD-AP and to reshuffle with negotiated channel.

In some embodiments, analyze access point relevant information and can comprise the frequency usage data obtaining WSD-AP from the WSD-AP a region, and identify the removable channel not contiguous with other current use channels.Removable channel can be the channel being movable to new channel, and the channel of this new channel and current use is adjoining, and this channel is the channel do not conflicted with other WSD-AP in this region.

In some embodiments, can realize configuring the adjacent block with usable spectrum by WSD-AP by transfer channel reconfiguration message to white space access point apparatus.In other embodiments, realize configuring the adjacent block with usable spectrum by DSM equipment by transfer channel reconfiguration message to white space access point apparatus.Channel reconfiguration message can comprise the parameter of expectation channel or the frequency range indicating WSD-AP to move to.This message can also comprise expects power level and other parameters, the specific radio access technologies such as used.

According to different execution mode, the message content of above-mentioned functions can be realized as mentioned below.

registration message and the acknowledge message that succeeds in registration

In some embodiments, fixing WSD must register to WSDB, and registration message can comprise information below:

1) FCCID of WSDFCCID:WSD;

2) manufacturer's sequence number of WSD sequence number: WSD;

3) position of WSD position: WSD, uses longitude and latitude form to represent;

4) WSD owner: the individual or the trade name that have WSD;

5) WSD contact person: the name of contact person being responsible for WSD;

6) WSD contact addresses: the address of contact person;

7) WSD telephone number: the telephone number of contact person; And

8) WSD contact person email address: the email address of contact person.

When WSDB receives registration message time, WSDB can return transmission " confirmation of succeeding in registration " message, and this message can comprise the id information of WSD.

re-register message and re-register success confirmation message

Being registered in the special time cycle of WSD is effective, such as three months.In time registering expired, can require that WSD re-registers.The content re-registering message can be identical with registration message.In addition, if WSD moves to reposition, then WSD needs to re-register to WSDB.When WSDB reception re-registers message time, WSDB can return transmission and " re-register and successfully confirm " message, and this message comprises the id information of such as WSD.

un-register message and un-register success confirmation message

In some embodiments, if WSD will be closed, then this WSD will need un-register, thus relevant WSDB can remove log-on message.If WSD moves to reposition, this WSD may also need to WSDB un-register to remove out-of-date information.Un-register message can comprise all information in registration message, can also add that this message is the information for un-register.

When WSDB receives un-register message time, this WSDB can return transmission " un-register successfully confirms " message, and this message can comprise the id information of WSD.

channel query messages

Channel query messages can have one or more below information field:

1) FCCID of WSDFCCID:WSD;

2) manufacturer's sequence number of WSD sequence number: WSD;

4) pattern of WSD pattern: WSD can be model I model II and fixing;

5) antenna height: antenna height more than ground level;

6) timestamp: the time that recording messages is sent out;

7) WSD owner: the individual or the trade name that have WSD;

8) WSD contact person: the name of contact person being responsible for WSD; People; And

9) WSD contact addresses: the address of contact person;

10) WSD telephone number: the telephone number of contact person;

11) WSD contact person email address (optional): the email address of contact person.

In addition, the processing locality inquired about to support channel and search extension, channel query messages can comprise information below:

1) destination (such as: DSM server or WSDB) of this message.

2) address (with good conditionsi) of DSM server: if this message is sent by DSM server, then message can be put in DSM server address, thus WSDB knows where channel is replied message is sent to.Otherwise, this information will not be comprised.The address of DSM server can be interpreted as " coexist ID ".

3) address (with good conditionsi) of WSDB: if this message will be sent to perform search extension by WSDB, then message can be put in the address of WSDB, thus WSDB knows where channel is replied message is sent to.Otherwise, this information will not be comprised.

4) the described information channel list of asking.That is, this inquiry can ask to be only the information of particular channel list.

channel replys message

Channel reply message can comprise information below:

1) available channel list: for asking the available channel list of WSD;

2) time expiration: the time expiration defining the availability of channel in above-mentioned available channel list;

3) transmitting power: the maximum transmission power of each channel in available channel list; And

4) WSD address: channel reply message for WSD address.

5) DSM server address (with good conditionsi): if send corresponding channel query messages by DSM server, then WSDB can specify DSM server address, thus channel reply message can arrive this DSM server.Otherwise, just do not comprise this information.

6) WSDB address (with good conditionsi): if send corresponding channel query messages (in order to carry out search extension) by WSDB, then DSM server can specify WSDB address, thus channel reply message can arrive this WSDB.Otherwise, just do not comprise this information.

channel uses measurement report

The object of this message is the use (such as to one group of user) in order to broadcast channel.This message can also be used for responding channel query messages, provides information more more than channel reply message.In some embodiments, this message is the message transmitted on the link at " between DSM " or " between WSD ".It provide the current instruction using or discharging channel of WSD.This message can be periodically/regular, or event triggering.This message can comprise information below:

1) provide information for position;

2) provide information for the list of channel;

3) timestamp; And

4) power (maximum 40mW, maximum 50mW, maximum 100mW, maximum 4W etc.) of Web vector graphic;

5) channel status; To be that each channel indicates whether by following object known/be considered to belong to:

A) via the main channel (primary) of the database of management;

B) based on the main channel of measurement report;

C) known unlicensed user, comprises runlevel (maximum power or the unknown);

D) the height interference in unknown source; And

E) discharge.

Channel status can pass through either type below and obtain:

1) sensing is measured;

2) from the report of other CM; And

3) channel of the actual use of network/equipment self

channel uses reservation request

This message can allow DSM server subscribeperiodic or regular channel uses information.The interface that this can be used for " between WSD ".This message can comprise information below:

1) address of DSM server, this address can be this DSM server " coexists ID ";

2) timestamp; And

3) optional subscribeduration.

channel release message

Channel release (or channel is reshuffled) message may be used for request release particular channel.Issue entity should make the rationalization that calls request as far as possible, and need not think that request can be honored.This message is used to be the execution mode being configured the adjacent block with usable spectrum by transfer channel reconfiguration message to white space access point apparatus.Information entrained by this message can comprise:

1) issue the address of DSM server, this address can be this DSM server " coexists ID ";

2) list of the channel be applied to is asked;

3) reason of asking (seeks adjacent BW; These channels will be used because of the relation of maximum power; Other);

4) position; And

5) timestamp.

bandwidth waste indicates.

Bandwidth wasteindication message can notify the fragment in frequency spectrum to WSD.Equipment can identify that the frequency spectrum of segmentation uses by this method.It can comprise information below:

1) frequency at fragment place is produced;

2) reason of segmentation;

3) timestamp; And

4) corrective action and the WSDID (optionally) of correction can be performed.

sensing report message

Sensing report message can be supported to try to be the first and assist the function of the available channel calculated in WSDB.It is to provide an execution mode of supplementary frequency spectrum usage data.It can comprise information below:

1) ID of transmit leg, which WSD this transmit leg identification have sent this message;

2) address of WSDB, specifies the address of the WSDB by receiving this message; And

3) spectrum-sensing table, describes the spectrum sensing result being carried out index by channel number and position.The channel be initiatively assigned with can be indicated as disabled.

sensing updating message

Sensing updating message can support the function of preemptively assisting the available channel calculated in WSDB.It is different from the sensing report message into all channel reporting sensing result, and sense updating message can be only experience after those recent renewals change channel send sensing result.This is to provide the another kind of execution mode of supplementary frequency spectrum usage data.Sensing updating message can comprise information below:

1) ID of transmit leg, identifies which WSD sends this message;

3) spectrum-sensing updating form, describes that carry out index by channel number and position, that needs are updated spectrum sensing result.

sensing query messages

Sensing query messages can assist to supporting reactions the function of the available channel calculated in WSDB.It is to provide or obtains another execution mode of supplementary frequency spectrum usage data.It can comprise information below:

1) ID of transmit leg, identifies which WSDB sends this message;

2) address of DSM server, specifies the address of the DSM server by receiving this message;

3) interested frequency spectrum list, list WSDB be interested in understand frequency spectrum and relevant position; And;

4) stand-by period, specify sensing result must produce within which time.This recipient contributing to this message determines the sensing algorithm that should use, this is because different sensing algorithms needs the processing time of different amount.

sensing replys message

Sensing replys the function that message can assist to supporting reactions the available channel calculated in WSDB.It is to provide another execution mode of supplementary frequency spectrum usage data.It can comprise information below:

1) ID of transmit leg, identifies which DSM server sends this message;

3) spectrum-sensing table, describes the spectrum sensing result being carried out index by interested channel number and position.The channel be initiatively assigned with will be indicated as disabled.

Hereafter be described in some the possible mappings between DSM system and 802.19.1 system architecture.

According to different execution modes, Figure 24-26 shows the different mapping of DSM system to IEEE802.19.1 system architecture.As is well understood, between DSM system and 802.19.1 system architecture, there are other possible mappings a lot of.Such as, can be in DSM server at Figure 24, CDIS, information is sent to other DSM server.

embodiment

In one embodiment, a kind of method comprises and receives white spatial frequency spectrum data from white spatial data repository service device.In one embodiment, white spatial frequency spectrum data comprise available frequency range data.The method also comprises storing supplements frequency spectrum usage data and receive channel query messages.The method also comprises transfer channel and replys message, and this channel is replied message and comprised at least one preferred frequency range data.Be based in part on white spatial frequency spectrum data and supplementary frequency spectrum usage data to determine at least one optimized frequency range data.

In certain embodiments, described method also comprises the channel reply message receiving indicating channel and select.

In certain embodiments, at least one preferred frequency range data comprises channel list.

In certain embodiments, channel list comprises channel preference information.

In certain embodiments, the method also comprises the channel confirmation message receiving indicating channel and use.

In certain embodiments, supplement frequency spectrum usage data and comprise white space access point relevant information.

In certain embodiments, supplement frequency spectrum usage data and comprise spectral measurements.

In certain embodiments, spectral measurements is obtained from white Space Facilities access point (WSD-AP).

In certain embodiments, at least one optimized frequency range data described can be determined based on identification and the current adjoining available frequency range of frequency spectrum that used.

In certain embodiments, at least one optimized frequency range data described is determined based on contiguous frequency spectrum criterion.

In one embodiment, Dynamic Spectrum Management device comprises white spatial database management module, and this white spatial database management module is configured to store to make clear one's meaning and position the white spatial frequency spectrum data of spatial data repository service device.In one embodiment, white spatial frequency spectrum data comprise available frequency range data.DSM device also comprises the supplementary data storage module being configured to store supplementary frequency spectrum usage data, and is configured to identify the correlation module about supplementary data based on white Space Facilities positional information at least in part.Described DSM device also comprises channel list generation module, and this channel list generation module is configured to identify at least one preferred frequency range list.In one embodiment, this at least one optimized frequency range data is based in part on white spatial frequency spectrum data and supplementary frequency spectrum usage data is determined.Described DSM device also comprises communication module, and this communication module is suitable for communicating with reciprocity DSM, white Space Facilities and white spatial data repository service device.

In certain embodiments, described DSM device also comprises WSD-AP, and this WSD-AP comprises the transceiver be configured to WSD client communication.

In certain embodiments, identify that the frequency spectrum of segmentation uses by Dynamic Spectrum Management server.

In certain embodiments, identify that the frequency spectrum of segmentation uses by WSD-AP.

In certain embodiments, analyze access point relevant information to comprise: obtain the not contiguous removable channel of WSD-AP frequency usage data and identification and other current use channels from the WSD-AP in a region.

In certain embodiments, the adjacent block with usable spectrum is configured by WSD-AP execution by transfer channel reconfiguration message to white space access point apparatus.

In certain embodiments, completed by DSM equipment and configure the adjacent block with usable spectrum by transfer channel reconfiguration message to white space access point apparatus.

In one embodiment, a kind of method comprises the frequency spectrum usage data obtaining WSD-AP from reciprocity DSM equipment, and this WSD-AP is by described reciprocity DSM equipment control.The method also comprises the frequency spectrum usage data sending the WSD-AP of local management to described reciprocity DSM equipment, and the frequency spectrum that transfer channel reconfiguration message is used by least one WSD-AP of described reciprocity DSM equipment control to described reciprocity DSM equipment with change.

In certain embodiments, frequency spectrum usage data comprises WSD-AP positional information.

In one embodiment, one method comprises: obtain at white Space Facilities access point (WSD-AP) place and supplement frequency spectrum usage data, transmitting channel query messages, receive the channel comprising at least one optimized frequency range data and reply message, and be based in part on channel and reply message and supplementary frequency spectrum usage data and carry out selective channel.

In certain embodiments, described method also comprises the channel confirmation message of the channel transmitted selected by instruction.

In certain embodiments, described method is also included in WSD-AP place from Dynamic Spectrum Management (DSM) equipment receive channel reconfiguration message, and transmitting channel changes message to the white Space Facilities of client.

Although describe characteristic sum element of the present invention specifically to combine above, those skilled in the art will be appreciated that each feature or element can be used individually or combinationally use by any way with further feature and element.In addition, method of the present invention can be implemented being combined in the computer program in computer-readable medium, software or firmware, to be performed by computer or processor.The example of computer-readable recording medium includes but not limited to read-only memory (ROM), random access memory (RAM), register, cache memory, semiconductor memory system, magnetizing mediums (such as internal hard drive and moveable magnetic disc), magnet-optical medium and optical medium, such as CD-ROM disk and digital versatile disc (DVD).The processor be associated with software may be used for realizing radio-frequency (RF) transceiver, to use in WTRU, UE, terminal, base station, RNC or any main frame.

Claims

1., for a method for Dynamic Spectrum Management, the method comprises:

Receive the white spatial frequency spectrum data of spatial data repository service device of making clear one's meaning and position, these white spatial frequency spectrum data comprise available frequency range data;

Receive the channel query messages of Space Facilities of making clear one's meaning and position;

In response to described channel query messages, transfer channel can with replying message to described white Space Facilities, described channel can comprise optimized frequency range data by reply message, described optimized frequency range data at least determined based on described white spatial frequency spectrum data and described optimized frequency range data comprise described white Space Facilities can the data of therefrom selective channel; And

Receive the channel confirmation message selected from the indicating channel of described white Space Facilities.

2. method according to claim 1, wherein said channel data available comprises channel list and described optimized frequency range data comprises channel list.

3. method according to claim 1, described method also comprises:

Store and supplement frequency spectrum usage data, wherein this supplementary frequency spectrum usage data comprises the data received from the white Space Facilities except the white Space Facilities that described channel query messages is received from.

4. method according to claim 3, wherein said supplementary frequency spectrum usage data comprises spectral measurements.

5. method according to claim 1, described optimized frequency range data is determined based on the standard maximizing adjacent untapped frequency spectrum blocks at least partly.

6. method according to claim 1, wherein said channel query messages also comprises the antenna features of described white Space Facilities.

7. method according to claim 6, wherein said antenna features comprises antenna height.

8. method according to claim 1, wherein to it, requested described spectral range comprises the list of channel to available frequency range data pin.

9. method according to claim 1, the described channel confirmation message wherein from described white Space Facilities comprises channel specific control message transmission demand.

10. method according to claim 9, the specific control message of wherein said channel transmits demand and comprises the instruction using heartbeat mechanism, uses to indicate continuous print.

11. methods according to claim 1, described method also comprises:

Store and supplement frequency spectrum usage data, wherein this supplementary frequency spectrum usage data also comprises the information used about the frequency spectrum in described white spatial frequency spectrum except the white spatial frequency spectrum usage data comprised from described white GML data storage server.

12. 1 kinds of Dynamic Spectrum Management DSM devices, this device comprises:

Transceiver; And

Processor, this processor is configured to:

Receive the channel query messages of Space Facilities of making clear one's meaning and position, described channel query messages comprises spectral range, and available frequency range data pin is requested to this spectral range;

Identify optimized frequency range data, described optimized frequency range data at least determined based on described white spatial frequency spectrum data and described optimized frequency range data comprise described white Space Facilities can the data of therefrom selective channel; And

In response to described channel query messages, transfer channel replys message, and described channel is replied message and comprised described optimized frequency range data.

13. devices according to claim 12, wherein said channel query messages comprises the antenna features of described white Space Facilities.

14. devices according to claim 13, wherein said antenna features comprises antenna height.

15. devices according to claim 13, described device also comprises:

Supplementary data memory module, this supplementary data memory module is configured to store supplementary frequency spectrum usage data, and wherein said supplementary frequency spectrum usage data also comprises the information used about the frequency spectrum in described white spatial frequency spectrum except the white spatial frequency spectrum usage data comprised from described white GML data storage server.

16. devices according to claim 13, described device also comprises storage and supplements frequency spectrum usage data, and wherein this supplementary frequency spectrum usage data comprises the data received from the white Space Facilities except the white Space Facilities that described channel query messages is received from.

17. 1 kinds of methods for Dynamic Spectrum Management implemented in white Space Facilities, the method comprises:

Transfer channel query messages, described channel query messages comprises spectral range, and available frequency range data pin is requested to this spectral range;

The channel received in response to described channel query messages can with replying message, and this channel can comprise optimized frequency range data by reply message, and described optimized frequency range data comprises described white Space Facilities can the data of therefrom selective channel;

Based on described optimized frequency range data by the channel of described white Space Facilities selection for using; And

Transmit the channel confirmation message of the selected channel of instruction.

18. methods according to claim 17, wherein said channel data available comprises channel list and described optimized frequency range data comprises channel list.

19. methods according to claim 17, wherein said channel query messages also comprises the antenna features of described white Space Facilities.

20. methods according to claim 19, wherein said antenna features comprises antenna height.

21. methods according to claim 17, wherein to it, requested described spectral range comprises the list of channel to available frequency range data pin.

22. methods according to claim 17, wherein said channel confirmation message comprises the specific control message of channel and transmits demand.

23. methods according to claim 22, the specific control message of wherein said channel transmits demand and comprises the instruction using heartbeat mechanism, uses to indicate continuous print.

24. 1 kinds of white Space Facilities, this equipment comprises:

Transceiver; And

This transceiver is configured to:

The channel received in response to described channel query messages replys message, and this channel is replied message and comprised optimized frequency range data, and described optimized frequency range data comprises described white Space Facilities can the data of therefrom selective channel; And

Based on described optimized frequency range data by the channel of described white Space Facilities selection for using.

25. equipment according to claim 24, wherein said channel query messages also comprises the antenna features of described white Space Facilities.

26. equipment according to claim 25, wherein said antenna features comprises antenna height.

27. equipment according to claim 24, wherein said processor is also configured to the channel confirmation message transmitting the selected channel of instruction.